Evidence is presented for the baryonic B meson decay B̄0→ D0ΛΛ̄ based on a data sample of 471×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric e+e- collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be B(B̄0→D0ΛΛ̄)=(9.8-2.6+2. 9±1.9)×10-6, corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay B̄0→D0Σ0Λ̄ with Σ0→Λγ is performed and an upper limit B(B̄0→D0Σ0Λ̄+B̄0→D0ΛΣ̄0) <3.1×10-5 is determined at 90% confidence level.

Evidence for the baryonic decay B¯ 0 → D0ΛΛ / J.P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, B. Stugu, D.N. Brown, L.T. Kerth, Y.G. Kolomensky, M.J. Lee, G. Lynch, H. Koch, T. Schroeder, C. Hearty, T.S. Mattison, J.A. Mckenna, R.Y. So, A. Khan, V.E. Blinov, A.R. Buzykaev, V.P. Druzhinin, V.B. Golubev, E.A. Kravchenko, A.P. Onuchin, S.I. Serednyakov, Y.I. Skovpen, E.P. Solodov, K.Y. Todyshev, A.N. Yushkov, D. Kirkby, A.J. Lankford, M. Mandelkern, B. Dey, J.W. Gary, O. Long, G.M. Vitug, C. Campagnari, M. Franco Sevilla, T.M. Hong, D. Kovalskyi, J.D. Richman, C.A. West, A.M. Eisner, W.S. Lockman, B.A. Schumm, A. Seiden, D.S. Chao, C.H. Cheng, B. Echenard, K.T. Flood, D.G. Hitlin, P. Ongmongkolkul, F.C. Porter, R. Andreassen, Z. Huard, B.T. Meadows, B.G. Pushpawela, M.D. Sokoloff, L. Sun, P.C. Bloom, W.T. Ford, A. Gaz, U. Nauenberg, J.G. Smith, S.R. Wagner, R. Ayad, W.H. Toki, B. Spaan, R. Schwierz, D. Bernard, M. Verderi, S. Playfer, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, L. Piemontese, V. Santoro, R. Baldini-Ferroli, A. Calcaterra, R. De Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I.M. Peruzzi, M. Piccolo, M. Rama, A. Zallo, R. Contri, E. Guido, M. Lo Vetere, M.R. Monge, S. Passaggio, C. Patrignani, E. Robutti, B. Bhuyan, V. Prasad, M. Morii, A. Adametz, U. Uwer, H.M. Lacker, P.D. Dauncey, U. Mallik, C. Chen, J. Cochran, W.T. Meyer, S. Prell, A.V. Gritsan, N. Arnaud, M. Davier, D. Derkach, G. Grosdidier, F. Le Diberder, A.M. Lutz, B. Malaescu, P. Roudeau, A. Stocchi, G. Wormser, D.J. Lange, D.M. Wright, J.P. Coleman, J.R. Fry, E. Gabathuler, D.E. Hutchcroft, D.J. Payne, C. Touramanis, A.J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, J. Bougher, D.N. Brown, C.L. Davis, A.G. Denig, M. Fritsch, W. Gradl, K. Griessinger, A. Hafner, E. Prencipe, K.R. Schubert, R.J. Barlow, G.D. Lafferty, E. Behn, R. Cenci, B. Hamilton, A. Jawahery, D.A. Roberts, R. Cowan, D. Dujmic, G. Sciolla, R. Cheaib, P.M. Patel, S.H. Robertson, P. Biassoni, N. Neri, F. Palombo, L. Cremaldi, R. Godang, P. Sonnek, D.J. Summers, M. Simard, P. Taras, G. De Nardo, D. Monorchio, G. Onorato, C. Sciacca, M. Martinelli, G. Raven, C.P. Jessop, J.M. Losecco, K. Honscheid, R. Kass, J. Brau, R. Frey, N.B. Sinev, D. Strom, E. Torrence, E. Feltresi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G.R. Bonneaud, H. Briand, G. Calderini, J. Chauveau, P. Leruste, G. Marchiori, J. Ocariz, S. Sitt, M. Biasini, E. Manoni, S. Pacetti, A. Rossi, C. Angelini, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, A. Cervelli, F. Forti, M.A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, A. Perez, G. Rizzo, J.J. Walsh, D. Lopes Pegna, J. Olsen, A.J.S. Smith, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, G. Piredda, C. Bünger, O. Grünberg, T. Hartmann, T. Leddig, C. Voß, R. Waldi, T. Adye, E.O. Olaiya, F.F. Wilson, S. Emery, G. Hamel De Monchenault, G. Vasseur, C. Yèche, F. Anulli, D. Aston, D.J. Bard, J.F. Benitez, C. Cartaro, M.R. Convery, J. Dorfan, G.P. Dubois-Felsmann, W. Dunwoodie, M. Ebert, R.C. Field, B.G. Fulsom, A.M. Gabareen, M.T. Graham, C. Hast, W.R. Innes, P. Kim, M.L. Kocian, D.W.G.S. Leith, P. Lewis, D. Lindemann, B. Lindquist, S. Luitz, V. Luth, H.L. Lynch, D.B. Macfarlane, D.R. Muller, H. Neal, S. Nelson, M. Perl, T. Pulliam, B.N. Ratcliff, A. Roodman, A.A. Salnikov, R.H. Schindler, A. Snyder, D. Su, M.K. Sullivan, J. Va'Vra, A.P. Wagner, W.F. Wang, W.J. Wisniewski, M. Wittgen, D.H. Wright, H.W. Wulsin, V. Ziegler, W. Park, M.V. Purohit, R.M. White, J.R. Wilson, A. Randle-Conde, S.J. Sekula, M. Bellis, P.R. Burchat, T.S. Miyashita, E.M.T. Puccio, M.S. Alam, J.A. Ernst, R. Gorodeisky, N. Guttman, D.R. Peimer, A. Soffer, S.M. Spanier, J.L. Ritchie, A.M. Ruland, R.F. Schwitters, B.C. Wray, J.M. Izen, X.C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, S. Zambito, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, P. Villanueva-Perez, H. Ahmed, J. Albert, S. Banerjee, F.U. Bernlochner, H.H.F. Choi, G.J. King, R. Kowalewski, M.J. Lewczuk, T. Lueck, I.M. Nugent, J.M. Roney, R.J. Sobie, N. Tasneem, T.J. Gershon, P.F. Harrison, T.E. Latham, H.R. Band, S. Dasu, Y. Pan, R. Prepost, S.L. Wu. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 89:11(2014 Jun 06), pp. JUN 6 2014.1-JUN 6 2014.9. [10.1103/PhysRevD.89.112002]

Evidence for the baryonic decay B¯ 0 → D0ΛΛ

P. Biassoni;N. Neri;F. Palombo;
2014

Abstract

Evidence is presented for the baryonic B meson decay B̄0→ D0ΛΛ̄ based on a data sample of 471×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric e+e- collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be B(B̄0→D0ΛΛ̄)=(9.8-2.6+2. 9±1.9)×10-6, corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay B̄0→D0Σ0Λ̄ with Σ0→Λγ is performed and an upper limit B(B̄0→D0Σ0Λ̄+B̄0→D0ΛΣ̄0) <3.1×10-5 is determined at 90% confidence level.
BaBaR detector
Settore FIS/04 - Fisica Nucleare e Subnucleare
6-giu-2014
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/268260
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